Abstract: A sealing system comprises a pair of clamping members and a sealing member between them. The sealing member is defined by a generatrix following a closed-loop curve around a longitudinal axis. In a cross-section in a plane that includes the longitudinal axis, the generatrix of the sealing member can have a substantially diagonal orientation between the clamping members. When an axial clamping force is applied, the clamping force is converted by the sealing member into a compression force that is greater than the clamping force along the generatrix.